. >> and from the peninsula, nasa shows off technology that will pay big dividends over the summer fire season. >> these two men are now the focus of a nationwide manhunt. >> and this is what is left of the fertilizer plant that blew up in texas last night and took half a town with it. good evening, everyone, i'm carolyn johnson. >> we have major vemments on both stories tonight but we're going to begin in texas where the death toll is rising. now, it could be as high as 40 peoplement today we began getting pictures like these, homes in runz for blocks around the plant that blew up last night, destroyed by at -- by the force of the blast. we sent laura anthony to the scene in the town of west about an hour and a half from dallas. and laura is there tonight with this report.>> i guess ammt catchingir i heard go now, you're about to die. >> ryan and his young family lived ine parmd billings blown to by wednesday night's explosion. he knew when the plant was just on fire waits time to take his young son and wife out of the house. >> 20 seconds we got in the car and started to leave. and th